MUMBAI, India, Aug. 10 -- Intellectual Property India has published a patent application (202521133917 A) filed by Sandip Institute Of Technology And Research Centre; Sandip Institute Of Engineering And Management; Sandip Polytechnic; Sandip Institute Of Pharmaceutical Sciences; Sandip University Nashik; and Sandip University Sijjoul on December 31, 2025, for A Biometric Authentication System For Secure Identity Verification.
Inventors include Phade, Gayatri M.; Kakde, Bhagwat; Mishra, Ajay Kumar; Saraf, Sarvesh Hemant; Singh, Krishnakumar Shyamkumar; Shelke, Prasad Shriram; Bandawane, Sayali Popat; and Pawar, Sushant.
The application for the patent was published on July 31, 2026, under issue no. 31/2026.
Abstract: The present invention relates to a biometric authentication system for secure identity verification, leveraging the unique shape and texture of the human tongue. The system comprises a camera module (101) for capturing high-resolution tongue images, a preprocessing module (102) for image enhancement, a shape analysis module (103) for extracting tongue geometry, a texture analysis module (104) for extracting micro-patterns, a matching score module (105) for generating similarity scores, a 4- digit PIN input interface (106), and a decision module (107) for final authentication. The system integrates a two-factor authentication process combining tongue biometrics and PIN verification. Captured images undergo preprocessing, followed by feature extraction using computer vision algorithms and Local Binary Patterns (LBP). Features are classified using a Support Vector Machine (SVM), producing a matching score (Ss) during registration and a testing score (St) during authentication. Access is granted only if both scores exceed a threshold and the PIN is correct.
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